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Selasa, 30 Agustus 2016

Building A Cheap And Effective Solar Oven

By Angela Perry


As more people are becoming aware of the environmental impact of their choices, renewable energy solutions are gaining in popularity. Solar energy, for instance, is becoming more common because it's renewable and clean. A Solar Oven is a great, inexpensive way to use the heat of the sun to prepare food.

There are different types of cooker that work with solar energy and some can be very sophisticated. Most models, however, are easy to make at home, using recycled materials. There are many benefits to using this kind of device, one of which is that your utility bill will shrink. For people who live in poverty in remote rural areas, a cooker that uses the sun's energy can even be a lifesaver, since they can use it to boil water for drinking.

Making your own cooker is so easy that even a child can do it. You will need a cardboard box big enough to accommodate a pie tin or pot. You'll also need some aluminum foil, black construction paper, old newspapers, clear plastic wrap, and tape or glue. The tools to have on hand include scissors or a box cutter as well as a ruler, stick or wooden spoon about a foot in length.

When you have all your materials together, you are ready for the first step. Cut along the top of the box about an inch from the edge. Do this on three sides only so that you have a flap.

Once you have made a flap at the top of the box, you need to line the inside of this flap with aluminum foil. You can tape or glue the foil to the cardboard. What is important is that the foil should be as smooth as possible. The idea is that the aluminum will reflect the sun's rays into the box.

Black is good at absorbing heat, so use the black construction paper for lining the bottom of your cardboard box. You also need to insulate the oven to keep the heat inside. For this, you can roll up sheets of newspaper and place them all along the sides.

The oven will be most effective from around eleven in the morning until three in the afternoon, when the sun is overhead. Place the cardboard box in a spot that receives lots of sunlight and then put the food inside, on a plate, in a pie tin or in a pot. Now place a double layer of clear plastic over the opening where you cut out the flap and tape it securely to the box. The plastic will allow heat to go in but will trap it inside, forming an oven. Finally, use your foot-long stick to hold up the lid at an angle which reflects the rays into your box.

It will take some time for the oven to heat up enough to cook your food, so it isn't the best option for making a quick snack. However, you can reheat leftovers in it or cook almost anything you like, including eggs, nachos, grilled cheese sandwiches, baked potatoes, rice, vegetables, soups or stews and even cookies. While your food is cooking, you may have to adjust the angle of the flap to ensure that it keeps reflecting the rays from the sun into the box.




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